51dbd4831b
* feat: add `reduceToCommonValue()` & improve opacity slider * feat: generalize and simplify type conversion cache * refactor: change cache from atoms to Map * feat: always attempt to reuse original fontSize when converting generic types
83 lines
2.8 KiB
TypeScript
83 lines
2.8 KiB
TypeScript
import {
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isTransparent,
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mapFind,
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reduceToCommonValue,
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} from "@excalidraw/common";
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describe("@excalidraw/common/utils", () => {
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describe("isTransparent()", () => {
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it("should return true when color is rgb transparent", () => {
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expect(isTransparent("#ff00")).toEqual(true);
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expect(isTransparent("#fff00000")).toEqual(true);
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expect(isTransparent("transparent")).toEqual(true);
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});
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it("should return false when color is not transparent", () => {
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expect(isTransparent("#ced4da")).toEqual(false);
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});
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});
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describe("reduceToCommonValue()", () => {
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it("should return the common value when all values are the same", () => {
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expect(reduceToCommonValue([1, 1])).toEqual(1);
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expect(reduceToCommonValue([0, 0])).toEqual(0);
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expect(reduceToCommonValue(["a", "a"])).toEqual("a");
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expect(reduceToCommonValue(new Set([1]))).toEqual(1);
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expect(reduceToCommonValue([""])).toEqual("");
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expect(reduceToCommonValue([0])).toEqual(0);
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const o = {};
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expect(reduceToCommonValue([o, o])).toEqual(o);
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expect(
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reduceToCommonValue([{ a: 1 }, { a: 1, b: 2 }], (o) => o.a),
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).toEqual(1);
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expect(
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reduceToCommonValue(new Set([{ a: 1 }, { a: 1, b: 2 }]), (o) => o.a),
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).toEqual(1);
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});
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it("should return `null` when values are different", () => {
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expect(reduceToCommonValue([1, 2, 3])).toEqual(null);
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expect(reduceToCommonValue(new Set([1, 2]))).toEqual(null);
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expect(reduceToCommonValue([{ a: 1 }, { a: 2 }], (o) => o.a)).toEqual(
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null,
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);
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});
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it("should return `null` when some values are nullable", () => {
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expect(reduceToCommonValue([1, null, 1])).toEqual(null);
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expect(reduceToCommonValue([null, 1])).toEqual(null);
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expect(reduceToCommonValue([1, undefined])).toEqual(null);
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expect(reduceToCommonValue([undefined, 1])).toEqual(null);
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expect(reduceToCommonValue([null])).toEqual(null);
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expect(reduceToCommonValue([undefined])).toEqual(null);
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expect(reduceToCommonValue([])).toEqual(null);
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});
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});
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describe("mapFind()", () => {
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it("should return the first mapped non-null element", () => {
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{
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let counter = 0;
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const result = mapFind(["a", "b", "c"], (value) => {
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counter++;
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return value === "b" ? 42 : null;
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});
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expect(result).toEqual(42);
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expect(counter).toBe(2);
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}
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expect(mapFind([1, 2], (value) => value * 0)).toBe(0);
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expect(mapFind([1, 2], () => false)).toBe(false);
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expect(mapFind([1, 2], () => "")).toBe("");
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});
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it("should return undefined if no mapped element is found", () => {
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expect(mapFind([1, 2], () => undefined)).toBe(undefined);
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expect(mapFind([1, 2], () => null)).toBe(undefined);
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});
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});
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});
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